40 



THE VOYAGE OF H.M.S. CHALLENGER. 



plants of oceanic islands, the question arises, Do they present any peculiarities ? Let us 

 examine the endemic element of the St Helena flowering plants. Firstly, with regard to 

 size : taking order by order and genus by genus, the flowers or flower-heads, as the case 

 may be, will be found rather above than below the average of the order or genus. 

 Excluding the Cyperacere and Gramineee, there are thirty endemic flowering plants, and 

 for purposes of comparison it may be worth giving the size, and colour, and structure of 

 their flowers or flower-heads in a tabular form, premising that they offer no abnormalities in 

 shape. The coloured figures in Melliss's St Helena have been utilised for size and colour. 



SIZE AND COLOUR OF THE FLOWERS OF THE ENDEMIC PLANTS OF ST HELENA, 



WITH REMARKS ON STRUCTURE, &c. 



